Well, kind'a, but not exactly. The stock spring is pretty weak, and inadequate for a heavy rider to a moderately heavy rider plus load or passenger. Below is the precise way to set front & rear sag via the preload adjustments. And, to further clarify, setting the sag with the preload adjustments raises or lowers the bike to get the loaded bike in about the center of the suspension range of movement to give equal chance to not top-out nor bottom-out.Here's the instructions for setting the preload
1. set to maximum
2. you're done